/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Viewport/IDisplayClusterViewportManager.h
Find viewport object by name [Game thread func]
[IDisplayClusterViewport](API\Plugins\DisplayCluster\Render\Viewport\IDisplayClusterViewport) * FindViewport ( const [FString](API\Runtime\Core\Containers\FString) & InViewportId ) const